The plane is a 2" wide
skew rabbet made of beech. The tote, which was added later in the
life of the
plane, is made of oak.
You can see here where the tote has been let into the side of the plane.
Here is a view a of
the bottom showing how the tote was let into the body. The iron
appears to be hand forged, and is a little thinner than a normal iron.
But it fits the plane perfectly, so it is not a replacement.